ESAB Caddy 140 Service Manual

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LIST OF CONTENTS Page
READ THIS FIRST 2........................................................
COMPONENT DESCRIPTION, LHN 130/140/200 4.............................
WIRING DIAGRAM LHN 130 7...............................................
WIRING DIAGRAM LHN 140
valid before ser.no. 011--xxx -- xxxx 8........................
WIRING DIAGRAM LHN 140
valid for ser.no. 011--xxx--xxxx and 220--xxx -- xxxx 9...............
WIRING DIAGRAM LHN 200
valid before ser.no. 011-- xxx--xxxx 10........................
WIRING DIAGRAM LHN 200
valid for ser.no. 011--xxx--xxxx and 220--xxx -- xxxx 11...............
COMPONENT POSITIONS, CIRCUIT BOARD AP01 12..........................
DESCRIPTION OF OPERATION, CIRCUIT BOARD AP01 14.....................
CHECKING THE GATE PULSES 19...........................................
CIRCUIT DIAGRAM, CIRCUIT BOARD AP02 20.................................
CIRCUIT DIAGRAM, CIRCUIT BOARD AP03 22.................................
MOS TESTER 24............................................................
SOFT STARTING 25.........................................................
ASSEMBLY/DISASSEMBLY 26................................................
LOAD CHARACTERISTICS 30................................................
TECHNICAL DATA 31........................................................
INSTALLATION 32...........................................................
OPERATION 33.............................................................
MAINTENANCE 34..........................................................
SPARE PARTS 35...........................................................
NOTES 35..................................................................
READ THIS FIRST
Maintenance and repair work should be performed by an experienced person, and electrical
work only by a trained electrician. Use only recommended replacement parts.
This service manual is intended for use by technicians with electrical/electronic training for
help in connection with fault--tracing and repair.
Use the wiring diagram as a form of index for the description of operation. The circuit
board is divided into numbered blocks, which are described individually in more detail in
the description of operation. All component names in the wiring diagram are listed in the
component description.
This manual contains details of all design changes that have been made up to and including
August 2004.
The manual is valid for the LHN 130, LHN 140 and LHN 200 with serial numbers:
301--xxx--xxxx, 508--xxx--xxxx, 535--xxx--xxxx, 540--xxx--xxxx, 628--xxx--xxxx,
011--xxx--xxxx and 220--xxx--xxxx.
The LHN 130, LHN 140 and LHN 200 are designed and tested in accordance with
international and European standard IEC/EN 60974--1 and EN 50199.
On completion of service or repair work, it is the responsibility of the person(s) etc.
performing the work to ensure that the product does not depart from the requirements
of the above standard.
Rights reserved to alter specifications without notice.

ESAB Caddy 140 Specifications

General

Brand	ESAB
Model	Caddy 140
Category	Welding System
Language	English